Anthropic Set to Launch Claude Fable 5 on June 9, Prediction Market Bets Hit 94.4%

According to tech journalist Alex Heath, Anthropic plans to launch Claude Fable 5, the first general-purpose model in its Claude 5 series, on June 9 local U.S. time. The new model shares underlying architecture with Claude Mythos 5 but includes additional safety guardrails for dual-use capabilities, delivering stronger performance on complex tasks like extended context and multi-turn conversations.

The launch rumors have triggered sharp volatility in prediction markets. As of the report, prediction odds for "Claude 5 launching before June 30" surged to 94.4%, while odds for "Claude Mythos launching before June 15" reached 93%.